Pet Absorbent Sheet with Segmented Light Transmittance Layers
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Solution Overview
Problem
Conventional absorbent sheets for pets do not effectively conceal the outline of excreted urine, making it visible from the top surface.
Innovation Solution
An absorbent sheet design featuring a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber with a core layer, and an intermediate sheet with a coloration region, where the top sheet has lower total light transmittance than the intermediate sheet, and a covering sheet to conceal excrement, enhancing concealability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the top sheet is made light transmissive to allow visibility of urine retention, then urine outline visibility is improved, but concealability of excrement is worsened
Solution Approach 1:
The absorbent sheet is divided into multiple functional layers: a top sheet for visibility, an intermediate sheet for absorption, and a colored sheet for concealment. Each layer performs a specific function, with the top sheet allowing light transmission for urine detection while the colored sheet provides excrement concealment, resolving the contradiction between visibility and concealability.
Solution Approach 2:
Different regions of the absorbent sheet have different optical properties. The top sheet has high light transmittance for urine visibility, while the colored sheet has low light transmittance for excrement concealment. This local differentiation of properties allows simultaneous achievement of urine detection and excrement hiding.
2Illumination intensity
If the intermediate sheet has high light transmittance to show urine retention, then urine detection is improved, but excrement concealability is worsened
Solution Approach 1:
The intermediate sheet is positioned between the top sheet and colored sheet, creating a segmented structure where each layer has optimized light transmittance properties. The intermediate sheet maintains appropriate transmittance for urine detection while the colored sheet provides the necessary concealment layer.
Solution Approach 2:
The intermediate sheet acts as an intermediary layer that facilitates urine retention and detection while allowing the colored sheet to perform its concealment function. It mediates between the visibility requirements of the top sheet and the concealment requirements of the colored sheet.
3Illumination intensity
If the top sheet has high light transmittance to allow urine visibility, then urine retention monitoring is improved, but excrement outline visibility is worsened
Solution Approach 1:
The absorbent sheet is segmented into distinct layers with the top sheet optimized for light transmission and urine monitoring, while the colored sheet provides excrement outline concealment. This segmentation allows each layer to optimize its function without compromising the other.
Solution Approach 2:
The top sheet has high light transmittance quality for urine monitoring, while the colored sheet has low light transmittance quality for excrement concealment. This local quality differentiation resolves the contradiction by applying different optical properties to different functional regions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design significantly reduces the visibility of excreted urine from the top surface, providing high concealability for pet excrement.
Implementation Method 1
an absorber that is disposed between the top sheet and the back sheet and absorbs liquid which has penetrated the top sheet
Implementation Method 2
an absorber that is disposed between the top sheet and the back sheet and absorbs liquid
Data Source
AI summary
An absorbent sheet for pets that is highly effective in concealing pet excrement. The absorbent sheet includes: a liquid-permeable front-surface sheet; a liquid-impermeable back-surface sheet; an absorbent body that is provided between the front-surface sheet and the back-surface sheet, and that absorbs liquid that has permeated through the front-surface sheet; an intermediate sheet that is arranged between the front-surface sheet and the absorbent body; and a color arrangement region that forms a color arrangement pattern together with at least one of the front-surface sheet, the back-surface sheet, and the absorbent body. The front-surface sheet is formed so as to have a lower total light transmittance than the intermediate sheet.